The acid is used to rinse the cations from the resins. In spite of its acidity, it is also the least hazardous strong acid to handle because of its non-toxic and non-reactive chloride ion. This number will be displayed on a placard on the container. It is colorless with a highly pungent odor. There is also a metastable eutectic point at 24.8% between ice and the [H7O3]Cl crystallization. It is a simple diatomic molecule. Hydrochloric acid is a chemical compound.It is a solution of hydrogen chloride (H Cl) gas that is dissolved in water.In the past, people called it muriatic acid.It is widely used in industry, and it is also made by the stomach to help digest food. : 7647-01-0; What is Hydrochloric Acid? The physi… It is monoprotic therefore it can only release one proton (H+). Heartburn or peptic ulcers can develop when these mechanisms fail. Cation exchange is widely used to remove ions such as Na+ and Ca2+ from aqueous solutions, producing demineralized water. Solubility. HCl is used in producing plastics , chemicals, and medicines. These include water treatment chemicals such as iron(III) chloride and polyaluminium chloride (PAC). See also Melting points of hydrocarbons, alcohols and acids , densities for different kinds of organic compounds and density, boiling and melting points of nitrogen and sulfur compounds. Hydroc… , Gastric acid acts as a barrier against microorganisms to prevent infections and is important for the digestion of food. Hydrochloric Acid, 37% w/w Chemical Properties of HCl. , Hydrochloric acid is a strong inorganic acid that is used in many industrial processes such as refining metal. Physical properties of hydrochloric acid, such as boiling and melting points, density, and pH, depend on the concentration or molarity of HCl in the aqueous solution. 24 Hour Emergency Information Telephone Numbers The freezing point curve of hydrochloric acid drops significantly from the freezing point of water to a low of -74 o F occurring around 20% concentration, and then increases with solution strength to peak at -15 o F at 38%. It consists mainly of hydrochloric acid and acidifies the stomach content to a pH of 1 to 2. Boiling point of hydrocarbons, alcohols and acids, C1-C16°C. Food-grade (extra-pure) hydrochloric acid can be applied when needed for the final product. , Another major use of hydrochloric acid is in the production of organic compounds, such as vinyl chloride and dichloroethane for PVC. The hydrogen and chlorine atom are connected with a single covalent bond.  Technical quality HCl at typically 18% concentration is the most commonly used pickling agent for the pickling of carbon steel grades. Initial boiling point and boiling range 50.5°C (122.9°F) Flash point Not Flammable Evaporation rate Not Available Gay-Lussac (1814) "Mémoire sur l'iode" (Memoir on iodine), United Nations Convention Against Illicit Traffic in Narcotic Drugs and Psychotropic Substances, United States Environmental Protection Agency, "Examples of Common Laboratory Chemicals and their Hazard Class", "Human Metabolome Database: Showing metabocard for Hydrochloric acid (HMDB0002306)", "Observations on different kinds of air [i.e., gases]", "Electro-chemical researches, on the decomposition of the earths; with observations on the metals obtained from the alkaline earths, and on the amalgam procured from ammonia", "Control and Physiologic Effects of Secretin", "Regulation (EC) No 1272/2008 of the European Parliament and of Council of 16 December 2008 on classification, labelling and packaging of substances and mixtures, amending and repealing Directives 67/548/EEC and 1999/45/EC, and amending Regulation (EC) No 1907/2006", Hydrochloric acid MSDS by Georgia Institute of Technology, National Pollutant Inventory – Hydrochloric Acid Fact Sheet, https://en.wikipedia.org/w/index.php?title=Hydrochloric_acid&oldid=996462725, Wikipedia indefinitely move-protected pages, Short description is different from Wikidata, Articles containing unverified chemical infoboxes, Articles containing Swedish-language text, Articles containing Turkish-language text, Articles containing Chinese-language text, Articles with Encyclopædia Britannica links, Creative Commons Attribution-ShareAlike License, Colorless, transparent liquid, fumes in air if concentrated. Faceshields;full-face respirator (US);Gloves;Goggles;multi-purpose combination respirator cartridge (US);type ABEK (EN14387) respirator filter. yellow (1) Available for Sale. In the United Kingdom, where it is sold as "Spirits of Salt" for domestic cleaning, the potency is the same as the US industrial grade. The large-scale production of hydrochloric acid is almost always integrated with the industrial scale production of other chemicals, such as in the chloralkali process which produces hydroxide, hydrogen, and chlorine, the latter of which can be combined to produce HCl. Rearrangement is Shown To Be a Concerted Process Publications Hydrochloric acid is a clear, colorless solution and has a very caustic odor. For full table - rotate the screen! However, it should be noted that there may be potential losses of the volatile metal chlorides (As, Sb, Sn, Se, Ge, and Hg) if HCl is used in acid digestion procedures.
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